Fluence supplying Arizona utility SRP’s first standalone 40MWh battery

LinkedIn
Twitter
Reddit
Facebook
Email
Since the beginning of May, SRP has also been offering households up to US$1,800 in support for 4,500 battery energy storage systems on a first-come-first-served basis. Image: Salt River Project.

Arizona utility Salt River Project (SRP) has followed up the recent completion of a 10MW battery storage system at a solar farm by beginning work on its first standalone grid-scale battery energy storage project.

SRP said contracts have been signed and construction is underway for the 10MW / 40MWh battery project in Chandler, southeast of Phoenix, in Senator John McCain’s home state. Technology provider and system integration specialist AES Corporation will execute the project, with Fluence set to supply energy storage systems, using AES’ Advancion platform.

The project will serve as a trial and demonstrator of energy storage’s use in mitigating demand-driven peaks on local grid networks, acting as peaking capacity. The four-hour duration storage system will charge from an SRP distribution substation. A joint statement issued by SRP, AES, Fluence and AES’ selected EPC partner Mortenson said the project “will help SRP assess how best to scale up future energy storage projects across its 2,900 square-mile electric service area”.

Although it is not located at a solar or wind farm facility, the project nonetheless is expected to aid the local network in integrating variable renewable energy resources. Arizona is currently on the verge of setting itself an enormous 3GW energy storage target and a new ‘Clean Peak Standard’ for the energy system is on the horizon.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The news follows SRP’s announcement of the just-completed Pinal Central Solar Energy Center a couple of weeks ago, where a 20MW PV plant and 10MW battery system are integrated. SRP will buy energy from Pinal Central under a 20-year power purchase agreement (PPA) with that project’s owner NextEra Energy Resources. Meanwhile, SRP and AES-Fluence have signed a 20-year agreement for the utility to use the Advancion Chandler battery system. The community based, not-for-profit utility has around a million customers in its service area.

The announcement also comes just a day after Fluence, AES’ JV with Siemens, partnered up with Japan’s fuel imports and trading giant JERA and Australian clean energy project developer Lyon Group to tackle the Asia-Pacific energy storage market.

At the end of February, Energy-Storage.news interviewed Fluence market director Dr Marek Kubik about the JV, what it can do for AES and Siemens and the positive economic and environmental outcomes that can be achieved with energy storage. You can see the on-camera discussion, which took place at this year’s Energy Storage Summit in London, below.

Read Next

Premium
May 11, 2026
Fluence’s share price rose sharply after its Q2 2026 financial results came out, with the company reaffirming full-year revenue and EBITDA guidance.
May 6, 2026
US renewable energy developer, Longroad Energy’s Sun Pond solar-plus-storage project in Maricopa County, Arizona, US has reached commercial operation.
May 6, 2026
A quartet of Germany BESS project announcements: Green Flexibility has completed a project, Suncatcher has enlisted Statkraft to optimise three solar-plus-storage ones, SWB and Be.storaged are together building a system, while ArcelorMittal has enlisted EDF Power Solutions to do so.
May 5, 2026
Fluence’s Daniel Elias explores why circular-economy principles and material recovery are essential as renewable energy infrastructure matures and reaches end of life.
April 28, 2026
Utility DTE Energy has said it will forego customer rate increases for two years dependent on the success of a US$16 billion data centre campus involving a battery energy storage system (BESS).